<div class="field field-name-body field-type-text-with-summary field-label-hidden view-mode-rss"><div class="field-items"><div class="field-item even">Notepad++ can count LOC (lines of code) of source files and give a volume estimation.
Press Ctrl+Shift+F shortcut to start "Find in files" dialog. Select "regular expression" search mode and start it.
Some regular expressions: